# 安全模块
# 该文件包含应用的安全相关功能，如密码加密、JWT令牌处理等

from passlib.context import CryptContext
from datetime import datetime, timedelta
from typing import Union, Any
from jose import jwt
from app.core.config import Settings

pwd_context = CryptContext(schemes=["bcrypt"], deprecated="auto")

def verify_password(plain_password: str, hashed_password: str) -> bool:
    """
    验证明文密码与哈希密码是否匹配
    """
    return pwd_context.verify(plain_password, hashed_password)

def get_password_hash(password: str) -> str:
    """
    对密码进行哈希处理
    """
    return pwd_context.hash(password)

def create_access_token(subject: Union[str, Any], expires_delta: timedelta = None) -> str:
    """
    创建访问令牌
    """
    settings = Settings()
    if expires_delta:
        expire = datetime.utcnow() + expires_delta
    else:
        expire = datetime.utcnow() + timedelta(minutes=settings.ACCESS_TOKEN_EXPIRE_MINUTES)
        
    to_encode = {"exp": expire, "sub": str(subject)}
    encoded_jwt = jwt.encode(to_encode, settings.SECRET_KEY, algorithm="HS256")
    return encoded_jwt